Apparatus for providing ink to an ink-jet print head and for compensating for entrapped air
US5872584A · kind A · utility
24Cited by
7References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 31, 1995 |
| Grant date | Feb 16, 1999 |
| Priority date | — |
| Expiry date | Oct 31, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2002/17516
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Apparatus for providing ink to an ink-jet print head in a print cartridge at substantially constant pressure and for compensating for air within the print cartridge. A flexible bag is maintained at atmospheric pressure within the print cartridge and actuates a pressure regulator also within the print cartridge. By expanding and contracting, the bag compensates for changes in pressure and temperature that occur while the pressure regulator is shut and that affect air entrapped within the print cartridge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.